/*
* Created by Lao·Zhu on 2021/8/20.
*/

  .syntax unified
  .cpu cortex-m3
  .fpu softvfp
  .thumb

.global g_pfnVectors
.global Default_Handler

/* start address for the initialization values of the .data section.
defined in linker script */
.word _sidata
/* start address for the .data section. defined in linker script */
.word _sdata
/* end address for the .data section. defined in linker script */
.word _edata
/* start address for the .bss section. defined in linker script */
.word _sbss
/* end address for the .bss section. defined in linker script */
.word _ebss

.equ  BootRAM, 0xF108F85F
/**
 * @brief  This is the code that gets called when the processor first
 *          starts execution following a reset event. Only the absolutely
 *          necessary set is performed, after which the application
 *          supplied main() routine is called.
 * @param  None
 * @retval : None
*/

  .section .text.Reset_Handler
  .weak Reset_Handler
  .type Reset_Handler, %function
Reset_Handler:

/* Copy the data segment initializers from flash to SRAM */
  movs r1, #0
  b LoopCopyDataInit

CopyDataInit:
  ldr r3, =_sidata
  ldr r3, [r3, r1]
  str r3, [r0, r1]
  adds r1, r1, #4

LoopCopyDataInit:
  ldr r0, =_sdata
  ldr r3, =_edata
  adds r2, r0, r1
  cmp r2, r3
  bcc CopyDataInit
  ldr r2, =_sbss
  b LoopFillZerobss
/* Zero fill the bss segment. */
FillZerobss:
  movs r3, #0
  str r3, [r2], #4

LoopFillZerobss:
  ldr r3, = _ebss
  cmp r2, r3
  bcc FillZerobss

/* Call the clock system intitialization function.*/
    bl  SystemInit
/* Call static constructors */
    bl __libc_init_array
/* Call the application's entry point.*/
  bl main
  bx lr
.size Reset_Handler, .-Reset_Handler

/**
 * @brief  This is the code that gets called when the processor receives an
 *         unexpected interrupt.  This simply enters an infinite loop, preserving
 *         the system state for examination by a debugger.
 *
 * @param  None
 * @retval : None
*/
    .section .text.Default_Handler,"ax",%progbits
Default_Handler:
Infinite_Loop:
  b Infinite_Loop
  .size Default_Handler, .-Default_Handler
/******************************************************************************
*
* The minimal vector table for a Cortex M3.  Note that the proper constructs
* must be placed on this to ensure that it ends up at physical address
* 0x0000.0000.
*
******************************************************************************/
  .section .isr_vector,"a",%progbits
  .type g_pfnVectors, %object
  .size g_pfnVectors, .-g_pfnVectors


g_pfnVectors:

  .word _estack
  .word Reset_Handler
  .word NMI_Handler
  .word HardFault_Handler
  .word MemManage_Handler
  .word BusFault_Handler
  .word UsageFault_Handler
  .word 0
  .word 0
  .word 0
  .word 0
  .word SVC_Handler
  .word DebugMon_Handler
  .word 0
  .word PendSV_Handler
  .word SysTick_Handler
  .word WWDGT_IRQHandler
  .word LVD_IRQHandler
  .word RTC_IRQHandler
  .word FMC_IRQHandler
  .word RCU_IRQHandler
  .word EXTI0_1_IRQHandler
  .word EXTI2_3_IRQHandler
  .word EXTI4_15_IRQHandler
  .word TSI_IRQHandler
  .word DMA_Channel0_IRQHandler
  .word DMA_Channel1_2_IRQHandler
  .word DMA_Channel3_4_IRQHandler
  .word ADC_CMP_IRQHandler
  .word TIMER0_BRK_UP_TRG_COM_IRQHandler
  .word TIMER0_Channel_IRQHandler
  .word TIMER1_IRQHandler
  .word TIMER2_IRQHandler
  .word TIMER5_DAC_IRQHandler
  .word 0
  .word TIMER13_IRQHandler
  .word TIMER14_IRQHandler
  .word TIMER15_IRQHandler
  .word TIMER16_IRQHandler
  .word I2C0_EV_IRQHandler
  .word I2C1_EV_IRQHandler
  .word SPI0_IRQHandler
  .word SPI1_IRQHandler
  .word USART0_IRQHandler
  .word USART1_IRQHandler
  .word 0
  .word CEC_IRQHandler
  .word 0
  .word I2C0_ER_IRQHandler
  .word 0
  .word I2C1_ER_IRQHandler
  .word I2C2_EV_IRQHandler
  .word I2C2_ER_IRQHandler
  .word USBD_LP_IRQHandler
  .word USBD_HP_IRQHandler
  .word 0
  .word 0
  .word 0
  .word USBDWakeUp_IRQHandler
  .word CAN0_TX_IRQHandler
  .word CAN0_RX0_IRQHandler
  .word CAN0_RX1_IRQHandler
  .word CAN0_SCE_IRQHandler
  .word SLCD_IRQHandler
  .word DMA_Channel5_6_IRQHandler
/*******************************************************************************
*
* Provide weak aliases for each Exception handler to the Default_Handler.
* As they are weak aliases, any function with the same name will override
* this definition.
*
*******************************************************************************/

  .weak NMI_Handler
  .thumb_set NMI_Handler,Default_Handler

  .weak HardFault_Handler
  .thumb_set HardFault_Handler,Default_Handler

  .weak MemManage_Handler
  .thumb_set MemManage_Handler,Default_Handler

  .weak BusFault_Handler
  .thumb_set BusFault_Handler,Default_Handler

  .weak UsageFault_Handler
  .thumb_set UsageFault_Handler,Default_Handler

  .weak SVC_Handler
  .thumb_set SVC_Handler,Default_Handler

  .weak DebugMon_Handler
  .thumb_set DebugMon_Handler,Default_Handler

  .weak PendSV_Handler
  .thumb_set PendSV_Handler,Default_Handler

  .weak SysTick_Handler
  .thumb_set SysTick_Handler,Default_Handler

  .weak WWDGT_IRQHandler
  .thumb_set WWDGT_IRQHandler,Default_Handler

  .weak LVD_IRQHandler
  .thumb_set LVD_IRQHandler,Default_Handler

  .weak RTC_IRQHandler
  .thumb_set RTC_IRQHandler,Default_Handler

  .weak FMC_IRQHandler
  .thumb_set FMC_IRQHandler,Default_Handler

  .weak RCU_IRQHandler
  .thumb_set RCU_IRQHandler,Default_Handler

  .weak EXTI0_1_IRQHandler
  .thumb_set EXTI0_1_IRQHandler,Default_Handler

  .weak EXTI2_3_IRQHandler
  .thumb_set EXTI2_3_IRQHandler,Default_Handler

  .weak EXTI4_15_IRQHandler
  .thumb_set EXTI4_15_IRQHandler,Default_Handler

  .weak TSI_IRQHandler
  .thumb_set TSI_IRQHandler,Default_Handler

  .weak DMA_Channel0_IRQHandler
  .thumb_set DMA_Channel0_IRQHandler,Default_Handler

  .weak DMA_Channel1_2_IRQHandler
  .thumb_set DMA_Channel1_2_IRQHandler,Default_Handler

  .weak DMA_Channel3_4_IRQHandler
  .thumb_set DMA_Channel3_4_IRQHandler,Default_Handler

  .weak ADC_CMP_IRQHandler
  .thumb_set ADC_CMP_IRQHandler,Default_Handler

  .weak TIMER0_BRK_UP_TRG_COM_IRQHandler
  .thumb_set TIMER0_BRK_UP_TRG_COM_IRQHandler,Default_Handler

  .weak TIMER0_Channel_IRQHandler
  .thumb_set TIMER0_Channel_IRQHandler,Default_Handler

  .weak TIMER1_IRQHandler
  .thumb_set TIMER1_IRQHandler,Default_Handler

  .weak TIMER2_IRQHandler
  .thumb_set TIMER2_IRQHandler,Default_Handler

  .weak TIMER5_DAC_IRQHandler
  .thumb_set TIMER5_DAC_IRQHandler,Default_Handler

  .weak TIMER13_IRQHandler
  .thumb_set TIMER13_IRQHandler,Default_Handler

  .weak TIMER14_IRQHandler
  .thumb_set TIMER14_IRQHandler,Default_Handler

  .weak TIMER15_IRQHandler
  .thumb_set TIMER15_IRQHandler,Default_Handler

  .weak TIMER16_IRQHandler
  .thumb_set TIMER16_IRQHandler,Default_Handler

  .weak I2C0_EV_IRQHandler
  .thumb_set I2C0_EV_IRQHandler,Default_Handler

  .weak I2C1_EV_IRQHandler
  .thumb_set I2C1_EV_IRQHandler,Default_Handler

  .weak SPI0_IRQHandler
  .thumb_set SPI0_IRQHandler,Default_Handler

  .weak SPI1_IRQHandler
  .thumb_set SPI1_IRQHandler,Default_Handler

  .weak USART0_IRQHandler
  .thumb_set USART0_IRQHandler,Default_Handler

  .weak USART1_IRQHandler
  .thumb_set USART1_IRQHandler,Default_Handler

  .weak CEC_IRQHandler
  .thumb_set CEC_IRQHandler,Default_Handler

  .weak I2C0_ER_IRQHandler
  .thumb_set I2C0_ER_IRQHandler,Default_Handler

  .weak I2C1_ER_IRQHandler
  .thumb_set I2C1_ER_IRQHandler,Default_Handler

  .weak I2C2_EV_IRQHandler
  .thumb_set I2C2_EV_IRQHandler,Default_Handler

  .weak I2C2_ER_IRQHandler
  .thumb_set I2C2_ER_IRQHandler,Default_Handler

  .weak USBD_LP_IRQHandler
  .thumb_set USBD_LP_IRQHandler,Default_Handler

  .weak USBD_HP_IRQHandler
  .thumb_set USBD_HP_IRQHandler,Default_Handler

  .weak USBDWakeUp_IRQHandler
  .thumb_set USBDWakeUp_IRQHandler,Default_Handler

  .weak CAN0_TX_IRQHandler
  .thumb_set CAN0_TX_IRQHandler,Default_Handler

  .weak CAN0_RX0_IRQHandler
  .thumb_set CAN0_RX0_IRQHandler,Default_Handler

  .weak CAN0_RX1_IRQHandler
  .thumb_set CAN0_RX1_IRQHandler,Default_Handler

  .weak CAN0_SCE_IRQHandler
  .thumb_set CAN0_SCE_IRQHandler,Default_Handler

  .weak SLCD_IRQHandler
  .thumb_set SLCD_IRQHandler,Default_Handler

  .weak DMA_Channel5_6_IRQHandler
  .thumb_set DMA_Channel5_6_IRQHandler,Default_Handler
